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Combination Meter: Inspection

  1. INSPECT SPEEDOMETER ON-VEHICLE 
    NOTE:

    Tire wear and tire over or under inflation will increase the indication error.

    Using a speedometer tester, inspect the speedometer for allowable indication error and check the operation of the odometer.

    If error is excessive, replace the speedometer.

    INSPECTION

    Standard indication Allowable range - USA (mph) Standard indication Allowable range - CANADA (km/h)
    20 19 - 22 20 18 - 23
    40 39 - 42.5 40 40 - 44
    60 59.5 - 63.5 60 60 - 64.5
    80 79.5 - 84 80 80 - 85
    100 100 - 105 100 100 - 105
      120 120 - 125.5
      140 140 - 146
      160 160 - 167
  2. INSPECT VEHICLE SPEED SENSOR OPERATION 
    1. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 2.
      Fig 1: Inspecting Vehicle Speed Sensor Operation
      G02846273Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the positive (+) lead from the tester to terminal 3 and the negative (-) lead to terminal 2.
    3. Rotate the shaft.
      4. NOTE:

      The voltage change should be performed 4 times for every revolution of the speed sensor shaft. If operation is not as specified, replace the sensor.

    4. Check that there is voltage change from approx. 0 V to II V or more between terminals 2 and 3.
  3. INSPECT TACHOMETER (ON-VEHICLE) 
    1. Connect a tune-up test tachometer, and start the engine.
      CAUTION:
      • Reversing the connection of the tachometer will damage the transistors and diodes inside.
      • When removing or installing the tachometer, be careful not to drop or subject it to heavy shocks.
    2. Compare the tester and tachometer indications.

    DC 13.5 V 20°C at (68°F) 

    INDICATION

    Standard indication (rpm) Allowable range (rpm)
    700 630 - 770
    3,000 2,850 - 3,150
    5,000 4,850 - 5,150
    7.000 6.790 - 7.210

    If error is excessive, replace the tachometer.

  4. INSPECT FUEL RECEIVER GAUGE OPERATION 
    1. Disconnect the connector from the sender gauge.
      2. NOTE:

      Because of the silicon oil in the gauge, it will take a short time for needle to stabilize.

      If operation is not as specified, inspect the receiver gauge resistance.

      Fig 2: Inspecting Fuel Receiver Gauge
      G02846274Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON, check that the receiver gauge needle indicates EMPTY.
    3. Connect terminals 2 and 3 on the wire harness side connector through a 3.4 W test bulb.
      Fig 3: Inspecting Fuel Receiver Gauge Circuit
      G02846275Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Turn the ignition switch ON, check that the bulb lights up and the receiver gauge needle moves toward FULL side.
  5. INSPECT FUEL RECEIVER GAUGE RESISTANCE 

    Measure the resistance between terminals.

    Fig 4: Locating Fuel Receiver Gauge Terminals On Combination Meter
    G02846276Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    w/ Tachometer: 

    TERMINAL RESISTANCE (W/ TACHOMETER)

    Between terminals Resistance (Ω)
    A - B Approx. 137
    A - C Approx. 260.3
    B - C Approx. 123.3

    w/o Tachometer: 

    TERMINAL RESISTANCE (W/O TACHOMETER)

    Between terminals Resistance (Ω)
    A - B Approx. 160
    A - C Approx. 84
    B - C Approx. 244

    If resistance value is not as specified, replace the receiver gauge.

  6. INSPECT FUEL SENDER GAUGE RESISTANCE 
    Fig 5: View Of Fuel Sender Gauge (70L)
    G02846277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Measure the resistance between terminals 2 and 3.

    70 liter tank: 

    RESISTANCE

    Float position mm (in.) Resistance (Ω)
    F: Approx. 82.7 (3.26) F: Approx. 3.0
    1/2: 17.1 (0.67) 1/2: Approx. 30.8
    E: Approx. 124.6(4.91) E: Approx. 110.0

    60 liter tank: 

    Fig 6: View Of Fuel Sender Gauge (60L)
    G02846278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    RESISTANCE

    Float position mm (in.) Resistance (Ω)
    F: Approx. 69.3 (2.73) F: Approx. 3.0
    1/2: 20.1 (0.79) 1/2: Approx. 30.8
    E: Approx. 108.8(4.28) E: Approx. 110.0

    If resistance value is not as specified, replace the sender gauge.

  7. INSPECT FUEL LEVEL WARNING LIGHT 
    1. Disconnect the connector from the sender gauge.
    2. Connect terminals 1 and 3 on the wire harness side connector.
      Fig 7: Inspecting Fuel Level Warning Light
      G02846279Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the ignition switch ON and check that the warning light lights up.

      If the warning light does not light up, test the bulb.

  8. INSPECT FUEL LEVEL WARNING SWITCH 
      NOTE:

      It will take a short time for bulb to light up.

      Fig 8: Inspecting Fuel Level Warning Switch (1 Of 2)
      G02846280Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Apply battery positive voltage between terminals 1 and 3, and through a 3.4 W test bulb, and check that the bulb lights up.
    2. Submerge the switch in fuel and check that the bulb goes out.
      Fig 9: Inspecting Fuel Level Warning Switch (2 Of 2)
      G02846281Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If operation is not as specified, replace the sender gauge.

  9. INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE OPERATION 
    1. Disconnect the connector from the sender gauge.
    2. Turn the ignition switch ON and check that the receiver gauge needle indicates COOL.
      Fig 10: Inspecting Engine Coolant Temperature Receiver Gauge Operation (1 Of 2)
      G02846282Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Ground terminal on the wire harness side connector through a 3.4 W test bulb.
    4. Turn the ignition switch ON, and check that the bulb lights up and the receiver gauge needle moves to the hot side.
      Fig 11: Inspecting Engine Coolant Temperature Receiver Gauge Operation (2 Of 2)
      G02846283Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If operation is as specified, replace the sender gauge. Then, re-check the system.

      If operation is not as specified, measure the receiver gauge resistance.

  10. INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE RESISTANCE 

    Measure the resistance between terminals.

    Fig 12: Locating Engine Coolant Temperature Receiver Gauge Terminals On Combination Meter
    G02846284Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    w/ Tachometer 

    TERMINAL RESISTANCE (W/ TACHOMETER)

    Between terminals Resistance (Ω)
    A - B Approx. 256.5
    A - C Approx. 181.5
    B - C Approx. 75

    w/o Tachometer 

    TERMINAL RESISTANCE (W/O TACHOMETER)

    Between terminals Resistance (Ω)
    A - B Approx. 139
    A - C Approx. 75
    B - C Approx. 214
    NOTE:

    Connect the test leads so that the current from the ohmmeter can flow according to the above order. This circuit includes the diode.

    If resistance value is not as specified, replace the receiver gauge.

  11. INSPECT ENGINE COOLANT TEMPERATURE SENDER GAUGE RESISTANCE 

    Connect the wire harness as shown in Fig 13, and adjust the ammeter pointer to indicate "0" using the slide rheostat, then read the rheostat indication.

    Fig 13: Inspecting Engine Coolant Temperature Sender Gauge Resistance
    G02846285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEMPERATURE RESISTANCE

    Temperature °C (°F) Resistance (Ω)
    50(122.0) 160 - 240
    120(248.0) 17.1 - 21.2

    If resistance value is not as specified, replace the engine coolant temperature sender gauge.

  12. INSPECT LOW OIL PRESSURE WARNING LIGHT 
    1. Disconnect the connector from the warning switch and ground terminal on the wire harness side connector.
    2. Turn the ignition switch ON and check that the warning light lights up.
      Fig 14: Inspecting Low Oil Pressure Warning Light
      G02846286Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the warning light does not light up, test the bulb.

  13. INSPECT LOW OIL PRESSURE SWITCH 
    1. Disconnect the connector from the switch.
    2. Check that continuity exists between terminal and ground with the engine stopped.
      Fig 15: Inspecting Low Oil Pressure Switch
      G02846287Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. NOTE:

      Oil pressure should be over 49 kPa (0.5 kgf/cm2 , 7.1 psi).

      If operation is not as specified, replace the switch.

    3. Check that no continuity exists between terminal and ground with the engine running.
  14. INSPECT BRAKE WARNING LIGHT 
    1. Disconnect the connectors from the level warning switch and parking brake switch.
    2. Connect terminals on the wire harness side connector of the level warning switch connector.
      Fig 16: Inspecting Brake Warning Light
      G02846288Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the ignition switch ON and check that the warning light lights up.

    If the warning light does not light up, test the bulb.

  15. INSPECT BRAKE FLUID LEVEL WARNING SWITCH CONTINUITY 
    1. Check that no continuity exists between terminals with the switch OFF (float up).
      Fig 17: Inspecting Brake Fluid Level Warning Switch Continuity
      G02846289Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that continuity exists between terminals with the switch ON (float down).

    If operation is not as specified, replace the switch.

  16. INSPECT PARKING BRAKE SWITCH CONTINUITY 
    1. Check that continuity exists between terminals with the switch ON (switch pin released).
      Fig 18: Inspecting Parking Brake Switch Continuity
      G02846290Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that no continuity exists between terminals with the switch OFF (switch pin pushed in).

    If operation is not as specified, replace the switch.

  17. INSPECT WASHER LEVEL WARNING LIGHT 
    1. Disconnect the connectors from the level warning switch and parking brake switch.
    2. Connect terminals on the wire harness side connector of the level warning switch connector.
      Fig 19: Inspecting Washer Level Warning Light
      G02846291Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the CHARGE fuse and turn the ignition switch ON, and check that the warning light comes on.

    If the warning light does not light up, test the bulb.

  18. INSPECT WASHER LEVEL SWITCH 
    1. Check that no continuity exists between terminals 3 and 4 with the switch OFF (float up).
      Fig 20: Inspecting Washer Level Switch
      G02846292Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that continuity exists between terminals 3 and 4 with the switch ON (float down).

    If operation is not as specified, replace the switch.

  19. INSPECT SEAT BELT WARNING LIGHT 
    1. Remove the body ECU connector from the No.1 J/B.
    2. Ground terminal 19 on the wire harness side connector.
      Fig 21: Inspecting Seat Belt Warning Light
      G02846293Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the ignition switch ON and check that the warning light lights up.

    If the warning light does not light up, inspect the bulb or wire harness.

  20. INSPECT BUCKLE SWITCH CONTINUITY 
    1. Check that continuity exists between terminals on the switch side connector with the switch ON (belt unfastened).
      Fig 22: Inspecting Buckle Switch Continuity
      G02846294Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that no continuity exists between terminals on the switch side connector with the switch OFF (belt fastened).

    If operation is not as specified, replace the seat belt inner.

  21. w/o Tachometer (Resister Type): 

    INSPECT LIGHT CONTROL RHEOSTAT 

    1. Turn the rheostat knob OFF and check that no continuity exists between terminals (Rheostat knob turned to fully counterclockwise).
      Fig 23: Inspecting Light Control Rheostat
      G02846295Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Gradually, turn the rheostat knob from the dark side to bright side and check that the resistance decreases from 10 to 0 Ω. (Rheostat knob turned to clockwise)

    If operation is not as specified, replace the rheostat.

  22. w/Tachometer (Electrical Type): 

    INSPECT LIGHT CONTROL RHEOSTAT 

    1. Connect terminals 1 and 3 through a 3.4 W test bulb.
      Fig 24: Inspecting Light Control Rheostat
      G02846296Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2.
    3. Turn the rheostat knob to fully counterclockwise and check that the test bulb goes out.
    4. Gradually turn the rheostat knob to clockwise and check that the test bulb brightness changes from dark to bright.

    If operation is not as specified, replace the rheostat.

  23. INSPECT BULB CHECK RELAY OPERATION 
    1. Connect the positive (+) lead from the battery to terminal C through a 1.4 W test bulb and the negative (-) lead to terminal B, check that the test bulb does not light up.
      Fig 25: Inspecting Bulb Check Relay Operation
      G02846297Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the positive (+) lead from the battery to terminal A and check that the test bulb lights up.

    If operation is not as specified, replace the relay.

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